From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification table and wiring diagram for a Weston Box Instrument Model 163.
| Identifier | ExFiles\Box 33\4\ Scan204 | |
| Date | 1st January 1935 | |
| -5- RR 518A 1500 1/35 (W.180/30) G268 Headers: Description. | Number and connections | Volt ranges. | Ampere ranges. | Resistances. (W) | Remarks. Row 1: Number and connections: 92 Volt ranges: .0197 (at 15°C.) Ampere ranges: .0126 Resistances: 1.565 (at 15°C.) Remarks: Instrument only. Row 2: Description: Weston Box Instrument Model 163. Number and connections: [Wiring diagram with labels: 45-15, Instr., A, V, 600, 150, +, -] Volt ranges: .0472 (at 18°C.) Ampere ranges: .0230 Resistances: 2.05 (at 18°C.) Remarks: Between External shunt terminals. Sub-section (Internal volt coil box): Volt ranges: 1.5, 15, 150, 600 Resistances: 117.7, 1177, 11770, 47080 Remarks: Internal volt coil box. Sub-section (External shunts): Ampere ranges: 1.5, 15 Resistances: .0323, .00315 Remarks: External shunts. | ||